Net Ionic Equations and Electrolytes

The video tutorial explains how to write a balanced net ionic equation for the reaction between potassium carbonate (K2CO3) and hydrobromic acid (HBr). It begins by balancing the molecular equation, assigning states to each compound based on solubility rules, and then writing the complete ionic equation. The tutorial identifies spectator ions and derives the net ionic equation, ensuring that both atoms and charges are balanced. The final net ionic equation is presented, with a focus on clarity and correctness.

What is the first step in balancing the molecular equation for the reaction between K2CO3 and HBr?

• Balance the carbon atoms.

• Balance the oxygen atoms.

• Balance the potassium atoms.

• Balance the hydrogen atoms.

Why is potassium carbonate considered aqueous in the reaction?

• Because potassium compounds are generally soluble.

• Because it is insoluble.

• Because it is a gas.

• Because it is a liquid.

Which of the following is a strong electrolyte in the reaction?

• Carbon dioxide

• Hydrogen gas

• Water

• Potassium bromide

What is the charge of the carbonate ion in the complete ionic equation?

• 1-

• 2+

• 2-

• 1+

Which ions are considered spectator ions in this reaction?

• Water molecules

• Hydrogen ions

• Carbonate ions

• Potassium ions

What is the purpose of removing spectator ions in a net ionic equation?

• To change the states of the compounds.

• To simplify the equation by removing ions that do not participate in the reaction.

• To balance the equation.

• To increase the number of ions in the equation.

In the net ionic equation, which substances are not split into ions?

• Aqueous solutions

• Gases and liquids

• Solids

• All substances

What is the net charge of the final net ionic equation?

• 1+

• 2+

• 0

• 2-

Why is it important to ensure that both atoms and charges are balanced in the net ionic equation?

• To increase the reaction rate.

• To make the equation easier to read.

• To comply with the law of conservation of mass and charge.

• To ensure the equation is aesthetically pleasing.

What is the final step in writing the net ionic equation?

• Ensuring the equation is balanced in terms of atoms and charge.

• Balancing the molecular equation.

• Identifying spectator ions.

• Assigning states to each substance.